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The atmospheric concentration of oxygen is 20.8 percent, which is a significantly large proportion of the atmosphere. Oxygen is being depleted because of the burning of fossil fuels, but the rate of depletion is very small compared to the amount of oxygen present in the atmosphere. The burning of fossil fuels is more of problem for oxygen depletion than the ...

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This is an excerpt from a paper written on the subject... Why is sunset more reddish than sunrise? By Neerad Tanvi, Bikaner I never considered the settlement of dust at night, but that makes total sense. ... The scattering is also related to the size and quantity of the scattering particles. During the night time the atmosphere is cool and the aerial ...

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I completely understand what your asking. I too have observed the "difference" in the light of the day. Morning light and afternoon light have a completely different look to them. I have no real way to prove this, but I believe this effect is due to the rotation of the Earth in relation to the Sun's position to the observer. What I mean is this. ...

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Let me add to the previous answer: In mixing length theory the mixing length is often defined as the friction velocity ${u_*}$ divided by the vertical shear $\frac{dU}{dz}$. Both of these quantities can be measured more or less directly at different heights. In the absence of buildings/canopy the mixing length is to a first approximation proportional to ${z}$...

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In theory, the methane emissions would warm the earth about 25 times more than the carbon dioxide emissions. That's because of something called the global warming potential. The global warming potential of a greenhouse gas is how much it warms the planet compared to carbon dioxide's base value of 1. As you might expect, methane's GWP is 25. Sources: https://...

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